llvm-project/clang/test/CodeGenCXX/pragma-pack.cpp

// RUN: %clang_cc1 %s -triple=i686-apple-darwin10 -emit-llvm -o - | FileCheck %s

struct Base {
  virtual ~Base();
  int x;
};

#pragma pack(1)
struct Sub : virtual Base {
  char c;
};

// CHECK: %struct.Sub = type <{ i32 (...)**, i8, %struct.Base }>
void f(Sub*) { }

static int i[sizeof(Sub) == 13 ? 1 : -1];
Fix another obscure corner layout case. llvm-svn: 121436 2010-12-10 08:11:00 +08:00			`// RUN: %clang_cc1 %s -triple=i686-apple-darwin10 -emit-llvm -o - \| FileCheck %s`

			`struct Base {`
			`virtual ~Base();`
			`int x;`
			`};`

			`#pragma pack(1)`
			`struct Sub : virtual Base {`
			`char c;`
			`};`

When laying out bases in, always try the "base subobject" LLVM type. If it turns out that a field or base needs to be laid out in the tail padding of the base, CGRecordLayoutBuilder::ResizeLastBaseFieldIfNecessary will convert it to an array of i8. I've audited the new test results to make sure that they are still valid. I've also verified that we pass a self-host with this change. This (finally) fixes PR5589! llvm-svn: 129673 2011-04-18 05:56:13 +08:00			`// CHECK: %struct.Sub = type <{ i32 (...)**, i8, %struct.Base }>`
Fix another obscure corner layout case. llvm-svn: 121436 2010-12-10 08:11:00 +08:00			`void f(Sub*) { }`
When laying out bases in, always try the "base subobject" LLVM type. If it turns out that a field or base needs to be laid out in the tail padding of the base, CGRecordLayoutBuilder::ResizeLastBaseFieldIfNecessary will convert it to an array of i8. I've audited the new test results to make sure that they are still valid. I've also verified that we pass a self-host with this change. This (finally) fixes PR5589! llvm-svn: 129673 2011-04-18 05:56:13 +08:00
			`static int i[sizeof(Sub) == 13 ? 1 : -1];`